Age/old

Someone told me today he thought I was 24 years old.

I didn't know whether to be flattered or offended. If I were between 26 and 30, that probably would have been flattering. But I'm 34, which makes me wonder whether I don't act or dress my age. I have no desire to be one of those 55-year-old leather-skinned women who still wears miniskirts and parties with her daughter and her daughter's friends.